Biosynthesized Poly(3-Hydroxybutyrate) on Coated Pineapple Leaf Fiber Papers for Biodegradable Packaging Application

Area of Science:

• Materials Science
• Biotechnology
• Polymer Science

Background:

• Pineapple leaf fiber paper (PLFP) has potential applications but lacks water resistance.
• Biodegradable coatings are sought to improve paper properties and sustainability.

Purpose of the Study:

• To investigate the use of biosynthesized poly(3-hydroxybutyrate) (P(3-HB)) as a coating for PLFP.
• To evaluate the effect of P(3-HB) coating on PLFP's properties, including water resistance and biodegradability.

Main Methods:

• Biosynthesis of P(3-HB) by Rhodococcus pyridinivorans BSRT1-1.
• Dip-coating of PLFP with a 7.5% (w/v) P(3-HB) solution in chloroform.
• Characterization using SEM, FTIR, and mechanical testing.
• Water drop penetration time and soil burial tests for biodegradability assessment.

Main Results:

• P(3-HB) formed a uniform coating on PLFP, confirmed by SEM and FTIR.
• Coating improved PLFP's brightness and mechanical properties compared to uncoated and commercially coated PLFP.
• Water drop penetration time significantly increased, indicating enhanced water resistance.
• All P(3-HB) coated PLFP samples demonstrated biodegradability under soil burial conditions.

Conclusions:

• Biosynthesized P(3-HB) effectively coats PLFP, enhancing its properties.
• P(3-HB) coated PLFP exhibits improved water resistance and biodegradability.
• This material presents a viable option for eco-friendly paper packaging applications.